AVR-Chat

On Apr 15, 2006, at 6:10 PM, jme_cd wrote:

> I am making a robot and want it to be able to do different tasks. I
> would like to be able to do this by storing the programs on seperate
> EEPROM chips and then swapping then depending on what i want it to do.
> How do i call the software on the external chip to run as the program
> rather then storing it on the main controller?


You could link multiple versions of the program and just extract the  
varying part. To do this you'd need a linker script that reserved a  
fixed part of flash memory for the to-be-loaded program, so that the  
addresses following that program would stay the same.

You might also want to look at the Turbo SIM project; they've come up  
with an avr-binutils patch that allows loadable applications on the  
AVR (very similar to what you want to do).

http://www.bladox.com

-- 
Ned Konz
MetaMagix embedded consulting
MetaMagix@gmail.com